Tinted hot water after hydrant flushing
Cold taps clear after FCWSA’s hydrant work but the hot ones stay tinted? Then the discolored water got drawn into the tank, and a flush gets it out before it joins the sediment layer.
Catlett, Virginia
Water heater flush in Catlett.
A water heater flush in Catlett is $99 right now, or $300 to descale a tankless, on village water or your own well.
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Rather talk now? (703) 997-9757
- Tank or tankless, any brand
- Priced before we start
- Pay after the visit
5.0 stars across 1,132 reviews
Two of our technicians in a customer’s basement, next to the furnace and a tank water heater.
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own plumbers, our own trucksNobody here is a subcontractor with a magnet on the door
The price is settled before the workYou see the number in writing before anything is taken apart
What it costs
What a water heater flush costs in Catlett.
Same prices as our water heater flush page, anywhere in Northern Virginia, and you pay after the visit.
Tank water heater flush, with the plumbing check
$99, normally $199
Tankless descale, with the plumbing check
$300, regularly $350
Comfort+ membership, a water heater flush with a sewer camera inspection every year included
$199 a year
Both visits include a whole-home plumbing check: supply lines, shutoffs, a pressure reading, drains, toilets and traps.
One per household, owner-occupied homes, limited time. A leaking tank, or one that’s 15 years old, needs repair or replacement, not a flush.
More for the money: Comfort+ membership, $199 a year, includes the flush and its plumbing check every year, plus a sewer camera inspection, a dryer vent cleaning and heating and cooling maintenance visits.
What’s different in Catlett
From FCWSA’s two village wells or your own, Catlett’s hardness is yours to test.
Fauquier’s comprehensive plan says that beyond the Town of Warrenton the county lives on groundwater alone, public systems and all. In the village that means FCWSA’s Catlett system, a pair of bedrock wells feeding about 74 connections; everywhere else it means a private well. FCWSA’s 2025 report gives no hardness figure for any of its systems, and a private well comes with no lab sheet, so the schedule here starts with a hardness test of your own tap water.
Every two or three months FCWSA flushes the Catlett mains. A flush takes about six hours, and while it runs the pressure may sag and the water may come out discolored; FCWSA’s advice is to hold the laundry and the baths, then run cold water until it’s clear. Hold off on hot water as well, because every gallon drawn from the heater is replaced by whatever is in the pipes, stirred-up sediment included, and that settles in the tank.
In 20119, 526 owner homes heat with electricity and 301 with propane, and the water heater generally runs on the same fuel as the heating. In an electric tank the lower element ends up buried in the crust and eventually fails. In a propane tank the crust lies directly above the flame, and that crackling or knocking when it lights is water caught beneath the layer boiling off. A private well may add sand and silt to whatever the hardness leaves behind.
Scale narrows the passages in a tankless heater’s heat exchanger a little more every year, so on untested well water a yearly descale at $300 is the sensible schedule until a test says otherwise. If the house drains to a STEP tank or a septic tank, ask for the flush water to go out a hose to the yard rather than down a drain: grit from a water heater is exactly the kind of solid those tanks keep.
By the numbers
Catlett houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Catlett
ZIP 20119 as a whole: every Catlett address, the village included. The Census place for the village alone has too few homes for steady figures.
- Median home built1990 Census
- Built before 1980about 4 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, nearly all Census
- Heated withelectricity, about 5 in 10 Census
- Rentedabout 2 in 10 Census
- In Catlett, about 5 in 10 owner homes heat with electricity. On an electric water heater, sediment settles around the lower heating element, and clearing it is part of the flush.
When it’s due
Why people in Catlett book a flush.
It pops or rumbles
That’s water boiling under a layer of sediment on the bottom of the tank. A flush clears it out.
Nobody knows when it was last done
Which is most houses. The drain valve at the bottom of the tank has usually never been opened.
Choosing who does it
How to pick who flushes your water heater in Catlett.
Questions worth asking anybody you call, us included.
Will they test the water before telling you how often?
A Catlett house has no utility hardness number to go by. Whoever sets your schedule should test at a tap first, or show you how.
Do they check the anode rod and test the relief valve?
The anode is the part that corrodes so the tank doesn’t, and the relief valve is the tank’s safety valve. A flush that skips both is just draining water.
On a tankless, do they pump descaler through it?
A real descale isolates the heater at its service valves and pumps solution through the heat exchanger, then rinses it and cleans the inlet screen.
Two of our crew going over a work order before the day's calls.
From our Google reviews
What our customers say.
5.0 stars across 1,132 reviews. Read them on our reviews page.
Zabi did a great job. Fill valve, flush valve and gaskets replaced on this 30-yr-old toilet. No leaks, no run-on.
Where we work
Water heater flush in every Northern Virginia town we serve
Next door to Catlett: Calverton, Casanova, Midland, Nokesville and Bristow.
Fairfax County
Arlington County
Loudoun County
Prince William County
Fauquier County
Stafford County
Questions
Water heater flush questions from Catlett.
How often should a tank in Catlett be flushed?
Yearly, to begin with. After the first flush or two, the hardness test and what the drain valve gives up tell you whether to keep it yearly or stretch it. Don’t put off the first one: old sediment packs hard enough that a drain valve can’t pass it.
Is Catlett’s village water different from a well on the farms?
Both are groundwater; the difference is who looks after it. FCWSA treats its Catlett wells with hypochlorite, tests the water and reports on it every year. A private well is permitted by the Fauquier County Health Department and tested when its owner tests it; the well itself is a well company’s job.
How much does a water heater flush cost in Catlett?
$99 right now for a tank, normally $199, with a whole-home plumbing check. A tankless descale is $300 right now, regularly $350. Comfort+ membership, $199 a year, includes the flush every year.
Ready when you are
Book the flush, tank or tankless.
Call, or send the form at the top. Tell us tank or tankless, and the tech brings the right gear.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Catlett and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,132 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.